# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 45.440245 km # Date (UTC) = 2012-01-09T09:29:51.461 # Date (julian) = 2455935.89573451 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.4150 1.8130388e+11 0.033514267 0.030900602 -26.277462 46.116635 6497.6187 1.5740672e+11 0.040931893 0.031565140 -26.375402 46.000889 6499.8225 1.3658281e+11 0.048250853 0.032229678 -26.470525 45.888472 6502.0262 1.2021125e+11 0.055590012 0.032894215 -26.565654 45.776047 6504.2300 1.0600992e+11 0.063066704 0.033558753 -26.660790 45.663612 6506.4338 9.3613483e+10 0.070788577 0.034223291 -26.755924 45.551181 6508.6375 8.2820204e+10 0.078855039 0.034887829 -26.851046 45.438764 6510.8413 7.3523476e+10 0.087423576 0.035552366 -26.946168 45.326347 6513.0450 6.5789391e+10 0.096691716 0.036216904 -27.037595 45.210235 6515.2488 5.9145795e+10 0.10670405 0.036881442 -27.128394 45.093494 6517.4526 5.3469195e+10 0.11758129 0.037545980 -27.219192 44.979095 6519.6563 4.8396455e+10 0.12922662 0.038210517 -27.309991 44.866677 6521.8601 4.3855664e+10 0.14165419 0.038875055 -27.400789 44.754259 6524.0638 3.9943203e+10 0.14893414 0.039449635 -27.491588 44.641843 6526.2676 3.6295551e+10 0.15539208 0.039948621 -27.582386 44.529427 6528.4713 3.3103634e+10 0.16209318 0.041816404 -27.673185 44.417009 6530.6751 3.0199873e+10 0.16756672 0.044773833 -27.763983 44.304590 6532.8789 2.7600585e+10 0.17292536 0.047418392 -27.852173 44.192173 6535.0826 2.5317950e+10 0.17558025 0.048188454 -27.938648 44.079757 6537.2864 2.3135312e+10 0.17612617 0.048820244 -28.028712 43.962674 6539.4901 2.0987753e+10 0.17552622 0.050236934 -28.127543 43.834195 6541.6939 1.8973923e+10 0.17329334 0.051101502 -28.223077 43.708849 6543.8977 1.7188361e+10 0.17086156 0.051617489 -28.309551 43.592108 6546.1014 1.5723605e+10 0.16862019 0.052547979 -28.396025 43.475367 6548.3052 1.4571001e+10 0.16727595 0.053758783 -28.482500 43.362750 6550.5089 1.3291043e+10 0.16573464 0.055112794 -28.568975 43.250332 6552.7127 1.2186903e+10 0.16429588 0.055407381 -28.655458 43.137905 6554.9165 1.1223282e+10 0.16260483 0.054851612 -28.741945 43.025471 6557.1202 1.0394972e+10 0.16051712 0.053790754 -28.827007 42.913043 6559.3240 9.7765834e+09 0.15790080 0.052350614 -28.909158 42.800625 6561.5277 9.0450256e+09 0.15537342 0.051112624 -28.991309 42.688207 6563.7315 8.3885314e+09 0.15273853 0.049082195 -29.073460 42.575790 6565.9353 7.7876277e+09 0.15043953 0.047256403 -29.155612 42.463374 6568.1390 7.2521388e+09 0.14883519 0.045643875 -29.237763 42.350956 6570.3428 6.7666723e+09 0.14707645 0.044775521 -29.319914 42.238538 6572.5465 6.3126044e+09 0.14496372 0.043917171 -29.402065 42.124434 6574.7503 5.8953045e+09 0.14235708 0.042494642 -29.484215 42.007694 6576.9541 5.5029152e+09 0.13945976 0.040273261 -29.566031 41.891289 6579.1578 5.1496426e+09 0.13584934 0.036983743 -29.643858 41.778871 6581.3616 4.8293659e+09 0.13260351 0.035487121 -29.721685 41.666454 6583.5653 4.5300794e+09 0.12969043 0.034735522 -29.799513 41.554037 6585.7691 4.2469119e+09 0.12701194 0.033355905 -29.877340 41.441621 6587.9728 3.9829696e+09 0.12529218 0.033373915 -29.957121 41.329203 6590.1766 3.7401465e+09 0.12330720 0.030733552 -30.039273 41.216785 6592.3804 3.5180142e+09 0.12101599 0.027704075 -30.120221 41.104367 6594.5841 3.3091264e+09 0.11874940 0.025851867 -30.193725 40.991951 6596.7879 3.1142463e+09 0.11620808 0.025723692 -30.267228 40.879535 6598.9916 2.9323151e+09 0.11429312 0.024933720 -30.344313 40.767103 6601.1954 2.7574807e+09 0.11434130 0.027137713 -30.422152 40.654668 6603.3992 2.6006203e+09 0.11312420 0.026426971 -30.499984 40.540021 6605.6029 2.4467994e+09 0.11247321 0.027170846 -30.577812 40.423282 6607.8067 2.3098726e+09 0.11040622 0.024114104 -30.654770 40.307411 6610.0104 2.1794858e+09 0.10726481 0.024012954 -30.728274 40.194993 6612.2142 2.0569898e+09 0.10476075 0.024160710 -30.801777 40.082575 6614.4180 1.9428186e+09 0.10346877 0.023652535 -30.875281 39.970158 6616.6217 1.8292520e+09 0.10174402 0.023379878 -30.948784 39.857742 6618.8255 1.7284482e+09 0.10069528 0.024394129 -31.022288 39.745325 6621.0292 1.6309274e+09 0.099517514 0.025079756 -31.095791 39.632907 6623.2330 1.5385272e+09 0.097570737 0.024578147 -31.169295 39.520489 6625.4368 1.4565903e+09 0.095749872 0.025918784 -31.242798 39.408073 6627.6405 1.3741477e+09 0.093396467 0.025564231 -31.316302 39.295656 6629.8443 1.2976744e+09 0.091621363 0.025956458 -31.389806 39.183238 6632.0480 1.2292438e+09 0.089384379 0.026038105 -31.463309 39.070820 6634.2518 1.1670607e+09 0.087642502 0.026345210 -31.534059 38.958403 6636.4556 1.1127238e+09 0.086111553 0.026372844 -31.603238 38.845987 6638.6593 1.0583118e+09 0.085200611 0.025642918 -31.673819 38.733570 6640.8631 9.9988441e+08 0.085893349 0.025165054 -31.747323 38.621151 6643.0668 9.4128100e+08 0.085742512 0.025202709 -31.820779 38.508733 6645.2706 8.9314346e+08 0.084841277 0.025578445 -31.889968 38.396300 6647.4743 8.4866796e+08 0.083816642 0.026687526 -31.959158 38.283867 6649.6781 8.0958372e+08 0.082951475 0.026698951 -32.028341 38.168423 6651.8819 7.7036285e+08 0.082494204 0.027159988 -32.097521 38.051682 6654.0856 7.3136404e+08 0.081823577 0.027999748 -32.166700 37.936611 6656.2894 6.9670045e+08 0.079983923 0.028277409 -32.235880 37.824194 6658.4931 6.6321201e+08 0.078421974 0.030935679 -32.305421 37.710603 6660.6969 6.2687535e+08 0.076995393 0.032259449 -32.379545 37.582123 6662.9007 5.9286385e+08 0.075704799 0.032538947 -32.453424 37.454437 6665.1044 5.5661865e+08 0.075049839 0.028376032 -32.522604 37.342020 6667.3082 5.2432938e+08 0.074507610 0.027216658 -32.591784 37.229603 6669.5119 4.9689771e+08 0.073456041 0.027829904 -32.657778 37.117185 6671.7157 4.6763110e+08 0.073295378 0.026875548 -32.722633 37.004768 6673.9195 4.4604247e+08 0.072390648 0.028834335 -32.789321 36.892350 6676.1232 4.2596353e+08 0.069928477 0.031793137 -32.858500 36.779934 6678.3270 4.1026303e+08 0.068717152 0.030717917 -32.927200 36.667518 6680.5307 3.9234882e+08 0.069042295 0.029556025 -32.992056 36.555100 6682.7345 3.7296903e+08 0.069619336 0.030985726 -33.056913 36.442682 6684.9383 3.5406477e+08 0.069540592 0.032701704 -33.121770 36.330265 6687.1420 3.3700061e+08 0.067858846 0.034263697 -33.186627 36.217848 6689.3458 3.1953293e+08 0.065354951 0.033704773 -33.255981 36.097634 6691.5495 3.0068799e+08 0.064496814 0.032871609 -33.330103 35.969156 6693.7533 2.8269302e+08 0.063622316 0.031345663 -33.397949 35.848093 6695.9571 2.6865036e+08 0.063452764 0.029683675 -33.458481 35.735675 6698.1608 2.5407394e+08 0.062614478 0.030438548 -33.519659 35.623255 6700.3646 2.4073543e+08 0.060909302 0.030938130 -33.584525 35.510822 6702.5683 2.2575672e+08 0.059877367 0.033330544 -33.649391 35.398389 6704.7721 2.1329728e+08 0.060134799 0.036556689 -33.710632 35.285968 6706.9758 2.0413209e+08 0.059756599 0.040144791 -33.771164 35.173551 6709.1796 1.9190508e+08 0.059079564 0.041018304 -33.838813 35.055309 6711.3834 1.8381190e+08 0.057147927 0.041128398 -33.912937 34.931771 6713.5871 1.7209816e+08 0.054971985 0.045810131 -33.980266 34.813793 6715.7909 1.6496222e+08 0.053050977 0.048187482 -34.040797 34.701377 6717.9946 1.5880124e+08 0.050878646 0.049812745 -34.101329 34.588960 6720.1984 1.5305539e+08 0.049763879 0.050396778 -34.161861 34.476542 6722.4022 1.4860658e+08 0.049423430 0.050108026 -34.222393 34.364124 6724.6059 1.3981513e+08 0.045972920 0.044866825 -34.282925 34.251708 6726.8097 1.3387597e+08 0.043345177 0.040958670 -34.343457 34.139292 6729.0134 1.2733864e+08 0.042925277 0.041036469 -34.408846 34.017856 6731.2172 1.2412196e+08 0.041063247 0.042182292 -34.478027 33.889378 6733.4210 1.2394219e+08 0.039945120 0.046209815 -34.542557 33.769537 6735.6247 1.1890520e+08 0.040958836 0.049956617 -34.603091 33.657118 6737.8285 1.1436556e+08 0.042524552 0.056774701 -34.664458 33.541086 6740.0322 1.0884279e+08 0.042531243 0.064105432 -34.728697 33.412607 6742.2360 1.0278741e+08 0.040132152 0.069185799 -34.792189 33.288234 6744.4398 1.0050753e+08 0.035911173 0.078133551 -34.852721 33.180140 6746.6435 98871687. 0.032604887 0.071505703 -34.913253 33.072047 6748.8473 95458058. 0.031358415 0.071474436 -34.977079 32.945839 6751.0510 89937758. 0.028427975 0.073733248 -35.041320 32.817358 6753.2548 85429961. 0.025684988 0.073801844 -35.098614 32.702772 6755.4586 77899019. 0.023478678 0.074404300 -35.154823 32.590355 6757.6623 77662812. 0.021931204 0.074730120 -35.215466 32.469070 6759.8661 73505647. 0.022526798 0.076028952 -35.279706 32.340589 6762.0698 68335631. 0.025825133 0.077938204 -35.339702 32.220597 6764.2736 70395332. 0.028454658 0.079496392 -35.395909 32.108180 6766.4773 66441018. 0.028209148 0.080793517 -35.453849 31.993366 6768.6811 64121324. 0.021088393 0.083306809 -35.518089 31.869828 6770.8849 58475721. -0.0019715314 0.089025891 -35.580787 31.748425 6773.0886 53604777. 0.0077029583 0.094370976 -35.636996 31.636008 6775.2924 56162688. 0.038233263 0.099716061 -35.693205 31.523591